Cutaneous myiasis, a parasitic infestation caused by the dipterous fly larvae in vertebrate hosts, is a significant health concern in dogs, particularly in tropical and subtropical regions. The condition is characterized by the invasion of fly larvae such as Dermatobia hominis and Cordylobia anthropophaga into the skin, leading to severe skin lesions, pain, and discomfort. Dogs with poor hygiene, wounds, or underlying skin conditions are more susceptible to infestation. Despite its prevalence, cutaneous myiasis in dogs often goes underreported and undertreated, leading to significant morbidity and mortality. The Veterinary Teaching Hospital at the University of Ibadan received a four-year-old male Lhasa Apso named Simba that presented with decreased appetite and visible maggots emerging from cutaneous lesions. Physical examination revealed a rough, matted coat, and multiple painful, raised skin lesions. The veterinary team performed manual removal of larvae, wound debridement with normal saline, and applied topical oxytetracycline spray. Supportive therapy included subcutaneous ivermectin, intravenous 5% oxytetracycline for five days, oral carprofen twice daily for five days, and intramuscular vitamin B complex for three days. The client was advised on proper grooming, improved hygiene, and provision of a clean kennel to prevent re-infestation. Marked clinical improvement was observed after five days, with increased appetite, improved alertness, and healing of lesions.